Today only, Amazon has the Cosmos: A Spacetime Odyssey Blu-ray or DVD Sale Priced at $22.49 for the Blu-ray edition. The DVD edition is $19.99. Free Shipping with Prime or on orders over $35. Join astrophysicist Neil deGrasse Tyson as he sets off in his "Ship of the Imagination" to discover Earth's cosmic address and the coordinates of our planet in space and time